![]() ![]() The chroma keying technique is commonly used in video production and post-production. ![]() ![]() A colour range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene. The technique has been used in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture, and video game industries. Ĭhroma key compositing, or chroma keying, is a visual-effects and post-production technique for compositing (layering) two images or video streams together based on colour hues ( chroma range). īottom panel: The corresponding frame in the final version in which the actor impersonates Barack Obama "appearing" outside the White House's East Room. Top panel: A frame in a full-motion video shot in the actor's living room. ![]() The practicality of green-screen compositing is demonstrated by actor Iman Crosson in a self-produced video. ![]()
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